Mixtures can either be homogeneous or heterogeneous. A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.A heterogeneous mixture is a type of mixture in which the components can be seen, as there are two or more phases present.One example of a mixture is air. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.Salt, sugar, and many other substances dissolve in water to form homogeneous mixtures.A homogeneous mixture in which there is both a solute and solvent present is also a solution.ir is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Salt, sugar, and many other substances dissolve in water to form homogeneous mixtures. A homogeneous mixture in which there is both a solute and solvent present is also a solution.
Why does it glow blue? It's the Cherenkov radiation: 'Cherenkov radiation is electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium at a speed greater than the phase velocity of light in that medium.' It's going faster than the speed of light (in water).
But these lamps also emit visible red light so people know they are on! The same is true for other types of heat lamps.) On the other end of the visible light spectrum, blue light rays with the shortest wavelengths (and highest energy) are sometimes called blue-violet or violet light. This is why the invisible electromagnetic rays just beyond the visible light spectrum are called ultraviolet (UV) radiation.